Q. What are the types of respirator mask?

Answer

1.The air-purifying respirator is a tight-fitting, full-face sealing mask that filters contaminant-laden air to protect the wearer. 2.The air-supplied respirator uses a hose to deliver breathable air from a stationary oxygen source.3.Self-contained breathing apparatus (SCBA) that uses high-pressure tank, mouthpiece and a pressure regulator to deliver filtered air underwater and aboveground level.